Re: PAE causing system crashes
Nopers. No nfs... nothing at all fancy with the drives except the raid. -m On Jan 18, 2006, at 7:03 AM, Ted Wisniewski wrote: You weren't by chance also using NFS? I was, all my other 5.x systems did not use NFS and are stable. I saw this same behavior and wound up going back to 4.11 to keep the system stable. Ted On Tuesday 17 January 2006 03:17 pm, Michael Barnett wrote: To ammend this slightly.. When running the PAE kernel, they will stay online indefinitely under little to no load. It is only when i want them to actually work will they freak out and reboot. -m On Jan 17, 2006, at 1:47 PM, Michael Barnett wrote: I have 3 dell machines with 2x xeon procs, 8G of ram, and a half terabyte raid 5. I attempted to run the AMD64 distribution on these boxes which was fine for everything except mysql, (which is all these boxes are going to do) so I reinstalled 5.4 i386. uname -a looks like (hostname obscured): FreeBSD myhost.mydomain.com 5.4-RELEASE-p9 FreeBSD 5.4-RELEASE-p9 #2: Mon Jan 16 23:27:12 PST 2006 [EMAIL PROTECTED]:/usr/ obj/usr/src/sys/SMP-PAE i386 My problem is, if i don't enable PAE in the kernel, i can only address half the ram in the boxes, but... the machines are stable. If i do enable PAE, i can address all the memory, but they randomly reboot without dumping any errors or logging. To enable PAE, i am building and booting off the following kernel config: snip include PAE ident SMP-PAE options SMP options KVA_PAGES=512 /snip I added the KVA_PAGES options hoping to stabilize the machine (doesn't seem to have made any difference.) The only other tuning i am doing at the moment is in loader.conf: snip kern.maxdsiz=2147483648# Set the max data size /snip When i boot without PAE I use the generic SMP kernel, and the machine is stable. I know that there are a number of other kernel tunables i could be tweaking, but I am not really sure where to start as the machine dies silently. I was hoping that someone who has run a stable PAE kernel with 8G of ram + could point me in the right direction. Thanks, -Michael ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions- [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] -- | Ted WisniewskiE-Mail: [EMAIL PROTECTED]| | Manager, Systems GroupWEB:http://oz.plymouth.edu/ ~ted/ | | Information Technology Services| | Plymouth State University Phone: (603) 535-2661 | | Plymouth NH, 03264Fax:(603) 535-2263 | ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
PAE causing system crashes
I have 3 dell machines with 2x xeon procs, 8G of ram, and a half terabyte raid 5. I attempted to run the AMD64 distribution on these boxes which was fine for everything except mysql, (which is all these boxes are going to do) so I reinstalled 5.4 i386. uname -a looks like (hostname obscured): FreeBSD myhost.mydomain.com 5.4-RELEASE-p9 FreeBSD 5.4-RELEASE-p9 #2: Mon Jan 16 23:27:12 PST 2006 [EMAIL PROTECTED]:/usr/obj/ usr/src/sys/SMP-PAE i386 My problem is, if i don't enable PAE in the kernel, i can only address half the ram in the boxes, but... the machines are stable. If i do enable PAE, i can address all the memory, but they randomly reboot without dumping any errors or logging. To enable PAE, i am building and booting off the following kernel config: snip include PAE ident SMP-PAE options SMP options KVA_PAGES=512 /snip I added the KVA_PAGES options hoping to stabilize the machine (doesn't seem to have made any difference.) The only other tuning i am doing at the moment is in loader.conf: snip kern.maxdsiz=2147483648# Set the max data size /snip When i boot without PAE I use the generic SMP kernel, and the machine is stable. I know that there are a number of other kernel tunables i could be tweaking, but I am not really sure where to start as the machine dies silently. I was hoping that someone who has run a stable PAE kernel with 8G of ram + could point me in the right direction. Thanks, -Michael ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: PAE causing system crashes
To ammend this slightly.. When running the PAE kernel, they will stay online indefinitely under little to no load. It is only when i want them to actually work will they freak out and reboot. -m On Jan 17, 2006, at 1:47 PM, Michael Barnett wrote: I have 3 dell machines with 2x xeon procs, 8G of ram, and a half terabyte raid 5. I attempted to run the AMD64 distribution on these boxes which was fine for everything except mysql, (which is all these boxes are going to do) so I reinstalled 5.4 i386. uname -a looks like (hostname obscured): FreeBSD myhost.mydomain.com 5.4-RELEASE-p9 FreeBSD 5.4-RELEASE-p9 #2: Mon Jan 16 23:27:12 PST 2006 [EMAIL PROTECTED]:/usr/ obj/usr/src/sys/SMP-PAE i386 My problem is, if i don't enable PAE in the kernel, i can only address half the ram in the boxes, but... the machines are stable. If i do enable PAE, i can address all the memory, but they randomly reboot without dumping any errors or logging. To enable PAE, i am building and booting off the following kernel config: snip include PAE ident SMP-PAE options SMP options KVA_PAGES=512 /snip I added the KVA_PAGES options hoping to stabilize the machine (doesn't seem to have made any difference.) The only other tuning i am doing at the moment is in loader.conf: snip kern.maxdsiz=2147483648# Set the max data size /snip When i boot without PAE I use the generic SMP kernel, and the machine is stable. I know that there are a number of other kernel tunables i could be tweaking, but I am not really sure where to start as the machine dies silently. I was hoping that someone who has run a stable PAE kernel with 8G of ram + could point me in the right direction. Thanks, -Michael ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions- [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
kernel memory tunables
I am trying to figure out which system tunables determine memory resource usage by the amount of available physical memory in the box so i can hard code sane values on a system with a lot of memory. Thanks, -Michael ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: PAE causing system crashes
It ran fine when we were only throwing a few dozen qps at it... when we tried to throw about 350qps its way, it was much much slower... slower than our existing server with significantly fewer resources available. I never could figure out what the issue was... tried recompiling with different options, allocating more and less memory to mysql (really to innodb as all our tables are innodb), and a number of system tweaks to no avail. Are you running it on an opteron, or on a xeon? I have heard things go much smoother on AMD hardware. Anyways.. the damage is done. We are back on i386 and I just need to make it go!Right now i am just running with the stable non-PAE kernel that limits access to 4G of memory while i work this out. -m On Jan 17, 2006, at 7:04 PM, Kris Kennaway wrote: On Tue, Jan 17, 2006 at 01:47:30PM -0600, Michael Barnett wrote: I have 3 dell machines with 2x xeon procs, 8G of ram, and a half terabyte raid 5. I attempted to run the AMD64 distribution on these boxes which was fine for everything except mysql, (which is all these boxes are going to do) so I reinstalled 5.4 i386. AFAIK mysql runs fine on amd64, so what was your problem with it? Kris ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
